AVR32DD28-I/SS

Overview

The AVR32DD28-I/SS is an 8-bit microcontroller from the AVR DD family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 32 KB of Flash memory, 4 KB of SRAM, and 256 bytes of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports industrial temperatures from -40°C to +85°C. Key peripherals include a 12-bit ADC, 10-bit DAC, two USARTs, SPI, TWI/I2C, and Multi-Voltage I/O (MVIO). It utilizes a single-pin UPDI interface for programming and debugging.

Feature Summary

• Multi-Voltage I/O (MVIO) capability on PORT C enables bidirectional communication across different power domains without external level shifters.
• Integrated Event System allows peripheral-to-peripheral signaling independent of the CPU, reducing system latency.
• Configurable Custom Logic (CCL) provides four programmable Look-up Tables for custom digital logic implementation.
• Automated CRCSCAN feature performs cyclic redundancy checks on Flash memory to ensure data integrity.

Applications

• Industrial control systems requiring robust noise immunity and multi-voltage domain interfacing
• Smart home appliances utilizing low-power architectures and intelligent analog features
• IoT devices needing efficient real-time processing and secure code protection via UPDI

Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C) and 'SS' indicates the SSOP-28 package. Confirm that the specific revision matches the datasheet DS40002441B. Ensure compatibility with existing firmware, as vertical migration within the AVR DD family maintains pin and feature compatibility.

Selection Notes

Select this component when a balance of moderate memory size and advanced analog peripherals is required. The MVIO feature is critical for designs interfacing with 3.3V or 5V subsystems directly. Consider the 24 MHz clock speed for applications demanding higher throughput than standard 16 MHz AVRs, while maintaining the simplicity of the 8-bit architecture.

Part Context

This part belongs to the AVR DD family, which introduces enhanced analog capabilities and event-driven architectures compared to legacy AVR series. It shares architectural similarities with the AVR DB and DU families but offers distinct peripheral configurations optimized for cost-sensitive yet feature-rich embedded applications.

Replacement Considerations

AVR32DD28T-E/SS: Extended temperature variant (-40°C to +125°C). AVR32DD28-I/SP: SPDIP package alternative. AVR32DD28-I/SO: SOIC package alternative. Verify package dimensions and thermal characteristics before substitution.